In the Department of Physics ,College of Science at the University of Baghdad a doctoral dissertation entitled “Study of Nuclear Structure for some Exotic Nuclei Using the Two Body Correlation Functions” by Abeer Ali Mohammed Hussein was discussed, Under the supervision of Prof . Dr. Ghaith Naima Flaiyh. The research aimed to calculate the density distribution of neutrons, protons, matter, and the corresponding root mean squared radius (rms) of the exotic nuclei (halo) and use the two-frequency nuclear shell model (TFSM) between the nuclear nucleon density distributions (2BNDD’s). The research results revealed that the difference between the formation factors of unstable nuclei and their stable counterpart is due to the difference in the neutron density distributions of these exotic  nuclei, which do not depend on the neutrons that form the halo, but rather result from a difference in the distribution of the proton density of the last proton in the nucleus, as well as to the center of mass correction factor, which It base on the mass number and the constant of the harmonic oscillator..

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